Pyrenomycetse, Sphseriaceee, AUantosporae, Valsa. 483 



exserto placentiformi-dilatato, nigro-fusco sparsis; ascis fusoideo- 

 clavatis, 8-sporis; sporidiis cylindraceo-curvulis, 8-11 v 1,5, liya- 

 linis. 



Hab. in ramis Alni incansB in Helvetia. 



8. Valsa Platanoidis Otth, Bem. Mittheil. 1868, p. 97. — Gregaria, 1822 

 leniter pustulata; peritheciis corticis strato supremo immersis, inor- 

 dinatis. saepe paucis, immo solitariis; collis exilibus, convergentibus, 

 ostlolis incrassatis in disco cinereo prominulis v. saepius eum pror- 



sus obliterantibus; ascis fusoideis, basi breviter rostratis; sporidiis 

 octonis, cylindraceis, obtusissimis, curvulis rectisve, 16-22 ^ 4-6, 

 hyalinis. 



HaJ}. in ramis Aceris piatanoidis pr. Bornam Helvetlse, 

 socia Cyfospora. 



9. Valsa soclalfs Ell. et Ev. BuU. Torr. Bot. 01. 1897, p. 132. — i823 

 Stromatibus circinatis v. gregariis. corticalibus, linea nulla circum- 

 scriptis, minutis, 1-2 mm. epidermidem in pustulas raiuutas orbi- 

 culariter dispositas elevantibus; peritheciis cortice immutato im- 

 mersis, 1-6 in quoque stromate, '/. mm. diam., in colla tenuia 

 abrupte contractis; ostiolis rainutis nigris, initio disco pallide albo 

 tectis, demum erumpentibus sed non exsertis: ascis subcylindraceis, 



p. sp. circiter 60 '«'6; sporidiis subdistichis, allantoideis, obtusis, 

 modice curvulis, hyalinis, 12-16 v 2 '/^-S. 



Hah. in ramis corticatis Salicis cordatae, Kansas Amor. 

 bor. (Bartholomew), 



10. Valsa leucopsis Ell. et Ev. Proc. Acad. Philad. 1896, p. 425. — 1824 

 Stromatibue depresso-conicis, y^-1 mm. diam., orbicularibus, apice 

 erumpentibus et niveis; peritheciis 6-12 in quoque stromate, cir- 

 cinatis, circiter 150 p. diam., sursum m colla gracilia abrupte eon- 

 tractis, disco niveo; ostiolis punctiformibus, erumpentibus, nigris; 

 ascis clavato-cylindraceis, 22-27 « 5-6; sporidiis sursum in asco di- 

 stichis, allantoideis, hyalinis, leniter curvulis, 5-6 '/^ >^ 1-1 '/j. 



Hah. in cortice Fraxini viridis (?), Nebraska, Amer. bor. 



11. Valsa albopuncta Ell. et Ev. Field Oolumb. Mus. IX, 1896, i825 

 p. 133. — Stromatibus minutis, '/o-^Y^ mm. diam., subseriatim 

 dispositis, epidermide inclusis nec in corticem interiorem penetran- 

 tibus, omnino albis, nuUa linea distincta circumscriptis ; peritheciis 

 3-6 in quoque stromate, pallide ardesiacis, 110-130 fx. diam., in 

 coUum tenue attenuatis; ostiolis minutis, suhglobosis, ardesiacis, 

 tandem circum marginem disci minuti nivei pulverulenti erum- 

 pentibus; ascis ciavato-cylindraceis, 50 ^ 6, breviter stipitatis, a,pice 



